It could have some additional "fudge factors" baked in for "aristic reasons" or whatever. Same thing with resonance really, it might have been designed "artistically" so that it "feels good."Kapsy wrote: ↑Fri May 13, 2022 2:15 am The F1 curve (ascending curve in red) seems to be approximated. On inspection the coefficient code uses a massaged exponential lookup in place of Chamberlins F1 function. However, the approximated curve is quite a bit off Chamberlins curve (blue ascending curve).
Personally I've always been a strong supporter of analog-like straight 1V/octave filter CV, but from what I've gathered, not everyone feels the same... or it could be just that an accurate exponential would have been too expensive or whatever. As far as Q curves go, tweaking them is something even I would do (ie. try to put more precision where perceptible changes are sensitive to nominal values and less where there's little audible difference from small changes) except where I specifically wanted to preserve the "feel" of some analog original.